2006-12-04 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-alias.c (compute_may_aliases):
Compute flow sensitive before flow insensitive.
(compute_flow_sensitive_aliasing): Don't try to add
a symbol memory tag to itself.
* alias.h (alias_set_subset_of): New prototype.
* alias.c (alias_set_subset_of): New function.
* tree-ssa-structalias.c: Update comments.
(struct variable_info): Add finished_solution.
(new_varinfo): Set finished solution to NULL.
(var_escaped_vars): Remove.
(escaped_vars_tree): Remove.
(escaped_vars_id): Remove.
(nonlocal_vars_id): Remove.
(constraint_expr_type): Add INCLUDES.
(graph_size): Removed.
(dump_constraint): Support INCLUDES.
(build_constraint_graph): Ditto.
(collapse_nodes): Add merge_solutions argument.
Don't merge attributes.
(process_unification_queue): Just use collapse_nodes.
(perform_var_substitution): Update call to collapse_nodes.
(get_constraint_exp_from_ssa_var): Use INCLUDES.
(process_constraint): Fix non-field sensitive handling
Handle includes.
(get_constraint_for): Use INCLUDES.
(make_constraint_from_anything): Renamed from
make_constraint_from_escaped.
(make_constraint_to_escaped): Removed.
(find_global_initializers): Removed.
(create_variable_info_for): Do not make constraints to escaped
vars anymore.
(dump_solution_for_var): Don't print out the equivalent points-to
sets, just use the name of the variable it shares it with.
(intra_create_variable_infos): Use INCLUDES.
Change nonlocal variable sets to anything sets.
(init_base_vars): Remove escaped_vars and nonlocal_var
initialization.
(find_escape_constraints): Removed.
(delete_points_to_sets): Remove dead code.
(used_smt_calculated): New variable.
(set_used_smts): New function.
(merge_smts_into): New function.
(find_what_p_points_to): Modify to use SMTs.
(create_nonlocal_var): Remove.
* tree-ssa-operands.c (access_can_touch_variable): Remove
reference to nonlocal_all.
* tree-ssa.c (verify_name_tags): Remove.
From-SVN: r119502
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